Description: PCM（脉冲编码调制，包括A律和U律压缩等功能的实现）-PCM (pulse code modulation, including legal and U A legal functions of the compression achieved) Platform: |
Size: 3072 |
Author:谢文武 |
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Description: ADPCM(Adaptive Differential Pulse Code Modulation)，是一种针对 16bits( 或8bits或者更高) 声音波形数据的一种有损压缩算法,它将声音流中每次采样的 16bit 数据以 4bit 存储,所以压缩比 1:4. 而且压缩/解压缩算法非常简单,所以是一种低空间消耗，高质量高效率声音获得的好途径。保存声音的数据文件后缀名为 .AUD 的大多用ADPCM 压缩。-ADPCM (Adaptive Differential Pulse Code Modulation), is a response to 16bits (or 8 bits or higher) voice waveform data of a lossy compression algorithm, it will sound each stream sampling 16bit data to 4bit storage, so the compression ratio 1:4. and compression/decompression algorithm is very simple, there is a low space consumption, high-quality sound and efficient way to get good. Preservation of the voice data file is named suffix. AUD mostly using ADPCM compression. Platform: |
Size: 2048 |
Author:王磊 |
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Description: 差分脉冲编码：通信工程中经常用到的一个实用算法。这里是matlab的实现。-Differential pulse code: Communications Engineering frequently used for a practical algorithm. Here is the realization of matlab. Platform: |
Size: 1024 |
Author:tao lan |
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Description: 心电信号的压缩!
通过预测编码和差分脉冲编码调制（DPCM）的方式来减少冗余，实现数据压缩的目的。-ECG compression! Through predictive coding and differential pulse code modulation (DPCM) approach to reduce redundancy and achieve the purpose of data compression. Platform: |
Size: 24576 |
Author:朱笑愚 |
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Description: 摘 要
文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。
简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
-Abstract
Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results.
Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method.
JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding.
JPEG standard is characterized by discrete Platform: |
Size: 523264 |
Author:压子 |
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Description: ex9_1 脉冲信号调制
ex9_2 载波10MHz，带宽2MHz的线性调频信号及其频谱图
ex9_3 产生7位巴克码编码的二相码
ex9_4 产生7位巴克码和线性调频的混合调制信号
ex9_5 瑞利分布实现程序
ex9_6 瑞利分布＋杂波
ex9_7 相关对数正态分布杂波
ex9_8 相关weibull分布杂波
ex9_9 相干相关K分布杂波
ex9_10 线性调频信号的数字化正交解调
ex9_11 雷达脉冲压缩处理
ex9_12 二相编码信号的脉压处理
ex9_13 用FFT和FIR方法实现MTD处理
ex9_14 雷达的恒虚警处理（CFAR）
ex9_15 比较相参积累和非相参积累-ex9_1 pulse signal modulation
ex9_2 carrier 10MHz, bandwidth of 2MHz and the linear frequency modulation signal frequency spectrum
7 Barker ex9_3 produce the two-phase coding code
7 Barker ex9_4 generated code and linear FM modulation of the mixed signal
Rayleigh distribution ex9_5 implementation procedures
Rayleigh distribution ex9_6+ Clutter
lognormal distribution ex9_7 related clutter
weibull distribution ex9_8 related clutter
Related ex9_9 coherent K distributed clutter
LFM signal ex9_10 digital quadrature demodulation
radar pulse compression ex9_11 treatment
ex9_12 BPSK signal pulse pressure treatment
ex9_13 Ways to use FFT and FIR implementation deal with MTD
ex9_14 CFAR radar deal (CFAR)
Comparison ex9_15 coherent and noncoherent Platform: |
Size: 18432 |
Author:张满超 |
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Description: 信号脉冲压缩的MATLAB实现程序
内附多个源代码，可作学习参考-Signal pulse compression to achieve the MATLAB program containing a number of source code, reference can be used for learning Platform: |
Size: 1024 |
Author:loppolcn |
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Description: 设雷达信号是码宽为0.5微妙，中心频率是10MHz的7为巴克码2PSK信号，接收的雷达回波中频采样频率为40MHz，中频进行正交下变频。假设在13.5km处有一个点目标，仿真该雷达的脉冲压缩处理。-Code-based radar signal is a delicate relief of 0.5, the center frequency is 10MHz for the 7 Barker Code 2PSK signal, the radar echo received IF sampling frequency of 40MHz, for orthogonal frequency down-conversion. 13.5km Assuming there is a point target, simulation of the radar pulse compression processing. Platform: |
Size: 1024 |
Author:kiara |
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Description: ex9_12 二相编码信号的脉压处理，13位巴克码用于雷达的二相编码脉冲压缩中，由于巴克码具有好的自相关函数，所以其脉压结果很好-BPSK ex9_12 pulse pressure signal processing, 13 Barker Code for the two-phase coded radar pulse compression, as a result of Barker codes have good auto-correlation function, so its a very good pulse pressure results Platform: |
Size: 1024 |
Author:rongyiyin |
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Description: this package contain a function generate a barker code sequence which is used in phase coded pulse compression performed in the second matlab file Platform: |
Size: 1024 |
Author:ahmad |
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Description: 雷达成像Dechirp 脉冲压缩代码 ，感兴趣的可以看看。-Radar the imaging Dechirp pulse compression code, and can see the interest. Platform: |
Size: 1024 |
Author:吴云坤 |
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Description: 仿真是现代雷达系统设计成功的基础，从这一点来说，没有任何软件比MATLAB更好。本代码提供雷达系统仿真常用MATLAB程序，内容包括：雷达基础导论、雷达检测、雷达波形、雷达模糊函数、脉冲压缩、面杂波与体杂波、动目标显示和杂波抑制、相控阵、目标跟踪、电子对抗、雷达截面积、高分辨率战术合成孔径雷达、信号处理等，提供MATAB文件和雷达系统设计与分析所需要的实际仿真经验-Simulation is a modern radar system design basis for success, from that point, there is no software better than MATLAB. The code provides radar system used MATLAB simulation program, including: Introduction to basic radar, radar detection, radar waveforms, radar ambiguity function, pulse compression, face and body clutter clutter, moving target indication and clutter suppression, phased array, target tracking, electronic warfare, radar cross section, high-resolution synthetic aperture radar tactics, signal processing, simulation provides MATAB documents and practical experience in radar system design and analysis needed Platform: |
Size: 263168 |
Author:tyk |
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Description: 非线性调频信号的产生和脉冲压缩代码，程序中还给出两种不同的脉压系数，用于分析非线性调频信号处理时，脉压结果的应用。(The generation of nonlinear frequency modulation signals and the code of pulse compression are given. In the program, two different pulse pressure coefficients are given. It is used to analyze the application of the pulse pressure results when the Nonlinear FM signal is processed) Platform: |
Size: 1024 |
Author:女大王驾到 |
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